Update docker/setup-buildx-action digest to 594f3bf

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/main.yml

@@ -17,7 +17,7 @@ jobs:
         uses: docker/setup-qemu-action@1f40c72289eff860ee54a304f1438e3cff362e0a # v4
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4
+        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003 # v4
 
       - name: Login to DockerHub
         uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4

.github/workflows/release-tag.yml

@@ -16,7 +16,7 @@ jobs:
         uses: docker/setup-qemu-action@1f40c72289eff860ee54a304f1438e3cff362e0a # v4
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4
+        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003 # v4
 
       - name: Login to DockerHub
         uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4